* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    background-color: rgb(205, 205, 205);
    height: 100%;
}

#app {
    display: flex;
    flex-direction: column;
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    color: white;
}

#head {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-shrink: 0;
    padding: 20px;
    background-color: rgb(50, 50, 50);

}

#input {
    flex-grow: 1;
    height: 50px;
    margin: 10px 20px 0 100px;
    padding-left: 15px;
    font-size: 16px;
    border-radius: 10px;
    outline: none;
}

#add {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    margin-top: 10px;
}

.body-head {
    display: flex;
    flex-shrink: 0;
    justify-content: space-between;
    padding: 20px;
    background-color: orange;
}

.num {
    height: 16px;
    line-height: 16px;
    padding: 0 2px 16px 2px;
    color: red;
    font-weight: bold;
    text-align: center;
    border: 2px solid green;
    border-radius: 50%;
}

.body {
    display: flex;
    flex-direction: column;
}

.body-head {
    flex-shrink: 0;
}
.todo{
    padding-left: 50px;
    color: black;
}
.done {

    padding-left: 50px;
    color: black;
}

.do {
    margin: 10px 20px 10px 0;
    padding: 16px;
    border: 1px solid red;
    font-size: 20px;
    font-weight: bold;
    border-radius: 15px;
}
.do button{
    float: right;
}